August 27, 2008
10:00 AM (EDT)

News Release Number: STScI-2008-32

A Clash of Clusters Provides New Clue to Dark Matter

August 27, 2008: A powerful collision of galaxy clusters has been captured by NASA’s Hubble
Space Telescope and Chandra X-ray Observatory. The observations of the
cluster known as MACS J0025.4-1222 indicate that a titanic collision has
separated the dark from ordinary matter and provide an independent
confirmation of a similar effect detected previously in a target dubbed
the Bullet Cluster. These new results show that the Bullet Cluster is
not an anomalous case.